Solve for x

-x + 1 = x + 21

x=-10

Step-by-step explanation:

first put "x" on one side and the constants on the other

the equation becomes 2x=-20 or - 2x=20

both cases divide by 2 and the answer becomes x=-10

or if you end up with - x=10 just multiply by - 1 and it ends up the same